Subcarrier Pairwise Coding for Short-Haul L/E-ACO-OFDM

Binhuang Song; Bill Corcoran; Qibing Wang; Leimeng Zhuang; Arthur J. Lowery

doi:10.1109/LPT.2017.2737643

Subcarrier Pairwise Coding for Short-Haul L/E-ACO-OFDM

Binhuang Song, Bill Corcoran, Qibing Wang, Leimeng Zhuang, Arthur J. Lowery

Electrical and Computer Systems Engineering

Research output: Contribution to journal › Article › Research › peer-review

16 Citations (Scopus)

Abstract

Dispersion-induced power fading in intensity modulated direct-detection systems degrades the higher frequency subcarriers' signal qualities. In layered/enhanced asymmetrically clipped optical OFDM (ACO-OFDM), which is a spectrally efficient version of ACO-OFDM, the error propagation in the iterative decoding can further degrade the performance, especially when a low bias current is used for the directly modulated laser. In this letter, we propose using pairwise coding within each layer to improve the bit error rate. We transmitted 5-GBb 16-QAM OFDM signals over a 19.8-km single mode fiber, and found a 3.6-dB improvement in the Q²-factor.

Original language	English
Article number	8006213
Pages (from-to)	1584-1587
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	29
Issue number	18
DOIs	https://doi.org/10.1109/LPT.2017.2737643
Publication status	Published - 15 Sept 2017

Keywords

asymmetrically clipped orthogonal frequency division multiplexing (ACO-OFDM)
Direct modulation direct-detection (DM/DD)
optical communications
pairwise coding

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10.1109/LPT.2017.2737643

Cite this

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AU - Corcoran, Bill

AU - Wang, Qibing

AU - Zhuang, Leimeng

AU - Lowery, Arthur J.

PY - 2017/9/15

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N2 - Dispersion-induced power fading in intensity modulated direct-detection systems degrades the higher frequency subcarriers' signal qualities. In layered/enhanced asymmetrically clipped optical OFDM (ACO-OFDM), which is a spectrally efficient version of ACO-OFDM, the error propagation in the iterative decoding can further degrade the performance, especially when a low bias current is used for the directly modulated laser. In this letter, we propose using pairwise coding within each layer to improve the bit error rate. We transmitted 5-GBb 16-QAM OFDM signals over a 19.8-km single mode fiber, and found a 3.6-dB improvement in the Q2-factor.

AB - Dispersion-induced power fading in intensity modulated direct-detection systems degrades the higher frequency subcarriers' signal qualities. In layered/enhanced asymmetrically clipped optical OFDM (ACO-OFDM), which is a spectrally efficient version of ACO-OFDM, the error propagation in the iterative decoding can further degrade the performance, especially when a low bias current is used for the directly modulated laser. In this letter, we propose using pairwise coding within each layer to improve the bit error rate. We transmitted 5-GBb 16-QAM OFDM signals over a 19.8-km single mode fiber, and found a 3.6-dB improvement in the Q2-factor.

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Subcarrier Pairwise Coding for Short-Haul L/E-ACO-OFDM

Abstract

Keywords

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